Pie wrapping machine



July 5, 1932. H. DRAGON PIE WRAPPING MACHINE 2- Sheets-Sheet 1 Filed Jn. 25. 19:50

July 5, 1932- H. DRAGON 1,865,7f18

i FIE WRAPPING MA C HIN Filed Jan. 25, 19:50 z nee'ts-Sneet 2 nina [s'ra'rss mrom'rn nmoon, or' sm osmonm appnemn nas January ss, lece. ser-mi na. mam.

rl'lhis invcntion relates to pie wrapping machines, and the lilre,

lt is the primaryr object of the invention to provide a wrappmg machine in which the E Wrapping of a pie is accomplished by placing a Sheet of wrapping material, larger than the pie, over a pocket, in which pocket the pie placed on the said Sheet, is received; means being provided in operative relation 12 to the pocket, to fold the edge of the sheet over the bottom of the pie, and to thereafter press an adhesive pie plate over the'folds on the pie bottom. w

Another object of the invention is the provision of a pie wrap ing machine 1n which a rotary member is a apted to receive a ie in a wrapping pocket therein, the pie ing placed in the pocket face down, upon a shect of wrapping material larger than the pock- 'f et, an iris-like structure being adapted to close over the pocket'to fold the edges of 'the wrapper Sheet over the bottom of the pie, means hein provided to close and open the said iris, at will, so that a pie plate placed npon the RJ bottom of the pie can be ressed in place by the operation of said irls; the ie plate bein adapted to adhere to the fol ed edges of te Wrapper Sheet; the wrapped pie being' discharged from the machine When the said member is rotated to bring the pocket into an inverted position.

'ther objects and advantages are to provideo, pie wrapping machine that Will be Superior in point of simplicity, inexpensiveness of construction, positiveness of operation, and facility and convenience in use and general eciency.

lin this specification and the annexed drawings, the invention is illustrated in the form 49 considered to be the best, but'it is to be under- Stood that the invention is not limited to such form, because it may be embodied in` other forms; and it is also to be understood that in and by the claims following the descriptibn,

it is desired to cover the invention in Whatsoever form it may be embodied. The invention is clearly illustrated in the accompanying drawings Wherein 2 Fig. 1 is a plan view of the machine;

53 Fig. 2 is a side view of the machine;

ll'ig. 3 is an enlar ed plan view of the machine, showing the folding seents, or iris, withdrawn from the pocket, in position to receive the pie;

Fi 4 is a sectional view of the rotary mein r of the machine, showing the pie on top of the Wrapping Sheet; the position of the Wra ping sheet' and of the ie within the poc et beino' indicated in ash-dot lines;

tlzhe section eing taken on the line 4-4 of Fig'. 5 is a longitudinal sectional view of the rotary member, after the actuating cam is turned into operative position, the folding segments being shown projected to fold the wrapping sheet over the pie;

Fig. 6 is an enlarged, fragmental view of the rotary member of the machine, partlyinl section, showing the folding mechanism in position to press the pie plate upon the pie, 'm the section being taken on the line 6-6 of ig. 7 is a fragmental sectional view of a bearing for the rotary member of the ma chine, and of a spring catch to hold said 15 ,member in npright position, the section being ;taken on the line 7-7 of Fig. 1; and

. Fig. 8 is a plan view of the machine, with a cover face plate removed, showing the iris segments in folding position.

In carrying out m invention I make use of a frame 6 from t e top of which extend bearing brackets 7 to rotatably support a pivot shaft 8. Between the bearings 7 is a rotatable member 9, monnted on the shaft 8. The member 9 is preferably made in the Shape of a hollow column-like shell, with octagonal bottom and top faces 11. In' each face 11 is formcd a pocket 12 recessed into the interior of the Shell 9. The diameter of each pocket 12 is slightly larger than the nsnal diameter of the article to be Wrapped, for instance, the -usnal diameter of a pie 18.

On the top of the frame 6 is a table i, at about or above the level of the uppermost 35 or top face ll, for holding a plurality of sheets of wrapping material.` For the purpose of wrapping pies or the like, the nse of glassine is preferable. The sheets of glassine 16 are larger than the pocket 12. To wrap 1W `Ethe pie 13, a sheet 16 is slid from the table 14 over the top face 11 to cover the openin 'of the pocket 12. The pie 13 is then place face down on the sheet 16 above the pocket 12 as shown in full lines in Fig. 4. The pie 12 is thus dropped into the pocket 12, thereby causing the edges of the sheet 16 to be folded upwardly by the sides of the pocket 12 as shown in dash-dot lines in Fig. 4.

ln order to complete the wra ping of the pie 13 it is necessary to fold t e upwardly ent edges of the sheet 16 over the bottom of the pie. It is to be noted that 'the pie is dropped out of the pie plate 17 so that the bottom thereof is uncovered. To fold the edges of the sheet 16 over the bot-tom of the pie 13, an iris 18 is employed. The iris 18.

comprises two pairs of arcuate, flat bars 19. The adjacent ends of the bars 19 of each pair are pivoted on a pivot pin 21. The free end of each bar 19 has an elongated slot 22 therein, which slot is substantially tangential to the periphery of the pocket 12 when the iris 18 is inoperative. The slots 22 are slidable on pins 23, one of said pins 23 extending thru two adjacent slots 22. The pins 23 are fixed on annular flanges 24, which latter extend outwardly from the edg'es of the pockets. 12. The pivot pins 21 are diametrically opposite each other and the pins 23 are opposite each other at right angles to the pivots 21. It is to be noted that one bar of each pair' is slidable over and above the corresponding' bar of the other pair, whereby relative movement of the slotted ends of the bars is facilitated.

The pivot 'pins 21 are slidahle in opposite radial slots 26 in the annular flanges 24. By moving the pivot pins 21 toward each other, the free ends of the bars 19 are urgerl inwardly, guided by the slots 22 and pins 23, so as to pivot around the pins 21, whereby the slotted bar ends are caused to overiap each other, and the iris 18 is contractcrl over the pie 13 within'the pocket 12. During the contraotin movement of the iris 18, the bars 19 fod the upwardly extending edge of the sheets 16 over the bottorn the pie 13. When the pins 23 are moved ontwardly, the bars 19 are also caused to swing outwardly, whereby the iris 18 is opened, permitting the pas'sing of the pie 13 into or out of the pocket 12. The bars 19 move thru .suitable apertures 27 in the sides of the pocket 12 below the flanges 24:.

After the, ie is thus wrappetl in a Sheet 16, the pie'p ate 17 is placed on the bottorn of the pie 13 over the folded edges of said sheet. The inner face of 'the plate has adhesive paste or the iike applied thereto adjacent the periphery thereof, 'to cause the same to adhere to the foldecl e'rigges the Sheet 16, thereby to seal the pie 13'in its wrapping. The iris 18 is then again controcted to exert a pressure on the plate 11, wherehy the same is ressed u on the wrapped pie 13. The pie is ischarge from the pocket 12 by rotating the shell 6 a half of a| revolution so as to bring the pocket 12 into its inverted position, namely the top pocket 12 is brought to a lowermost, inverted position, allowlng the wrapped pipe 13 to drop out of the pocket 12, right side up, as shown in Fig. 4. The uppermost pocket 12 being empty, is now ready to receive another pie 13 for wrapping. For the complete wrapping of a pie, the iris 18 is closed twice, first to fold the edges of the Sheet 16. over the bottoxn of the pie, and then to press the adhesive plate 17 upon the folds. The iris 18 is operated bya cam mechanism 28 disposed within the shell 6. The pivot pins 21 are threadedly secured into the ends of brackets 29, .the arms of which extend in opposite directions to the opposite pockets 12. Therefore the pivots 21 are moved in the slots 26, as the brackets 29 are moved toward or away from each other; In the hub 31 of each bracket 29 is threadedly secured a stub shaft 32, which latter is slidably held in the adj acent side of the shell 9. A coil sprin'g 33 is arranged between each hub4 31 and the adjacent side of the shell 9 tourge the respective bracket 29 toward the pivot shaft 8.

On each hub 31 is mounted a roller 34, which rides on the periphery of an oval cam 36, the latter being in turn fixedly mounted on the shaft 8, by .means` of a cross pin. In the position of the cam 36, shown in Fig. 11, the brackets 29 are helcl apart from each other in their outermost position, thereby holding the iris 18 open. The iris 18 is closed by rotating the carn a quarter of a revolution into the position shown in Figs. 5 and 6, in which positron the action of the Springs 33 urges the brackets 29 toward each other. Therefore,

by rotating the shaft 8 a quarter of a revolution, the iris 18 is closed or opened, as the case may be.

The shaft 8 is operated, at will, thru a foot lever 3'? pivoted on the frame 6, and connected to a crank 38, which letter rotates a sprocket 39. Rotation'is transmitted from the sprocket 39 thru a Chain 40 to a sprocket 11 fixed on the shaft 8. A spring' 42, secured at one end thereof to the frame 6, and at the other ends thereof to an. arm of the crank 38, is arrangecl to automatically' return the actuating mechanism a quarter of a turn whenever the foot lever 33 is released. The entire cam operating mechanisni is preferably constrncted for successive Quartet' turns in opposite directions, the return movement being automatic.

n order to hold the sheli 6 in an upright position, so 'that one of its faces 11 is in operntive reiation to the table 14-, a spring' catch is provided in one of the bearing brackets i. The ac'ljaccnt hub 4141 of'the Shell 6 has two diemetrioally opposite inclentations 11-6 thereshaft 8, corres onding to the radial dista-nce of the center` o the catch 43 therefrom. One of the indentations 46 is in alignment with the catch 43 at a time when one of the faces 11 is in operative position. The catch 43 snaps into the aligning indentation 44 to hold the Shell 6 in its operative position, after every 180 turn. During the rotation of the Shell 6 around the shaft .8v and the cam 36 thereon, the iris 18 is closed at a quarter turn of the Shell 6, and is again fully opened by the time the pockets 12 reach the respective uppermost and lowermost positions thereof. In tbi-'s manner the accidental discharge of the wrapped pie is prevented until the half turn of the shell 6 is completed, at which time the wrapped ie is allowed to drop out of the lower pocket 12, and the upper pocket 12 is open and ready to receive another pie for wrapping. v

Having thus described this invention, what l claim and desire to Secure by Letters Patent is:

1. a pie wrapping machine a recessed, pie-receiving element adapted to have a Sheet of wrapping material placed over the recess and to have a pie inserted thereinto face down on said Sheet; means on said element in operative relation to the recess being movable over the recess to fold the edges of said Sheet of material over the bottom of the pie and to press an adhesive pie plate over the folded.

Sheet on the bottom of the pie; and means to move said folding means intooperative and inoperative positions.

2. In a pie Wrappmg machine a frame; a

recessed pie-receiving element adapted to have a Sheet of wra-pping material placed over the recess and to have a pie inserted therein on said Sheet; means on said element in operative relation to the recess being movable over the recess to fold said Sheet of material around and over the circumference of the pie; and means to move said folding means into operative and inoperative positions, said element being movably supported on the frame to allow the inverting of the position of the recess whereby the Wrapped pie is dis charged therefrom.

3. In a pie wrapping machine, a frame; a recessed pie-receiving element adapted to have a Sheet of wrapping material placed over the recess and to have a pie inserted thereinto face down on said Sheet; 'means on Said element in operative relation to the recess being movable over the recess to fold the edges of Said sheet'of material over the bottom of the pie; and means to move Said folding means into operative andinoperative positions, said element being movably supported on the frame to allow the inverting of the position of thel recess whereby the wrapped pie is discharged therefrom.

4. A pie wrapping machine comprising a frame; a pie holding member on the frame having a pocket formed on a face thereof, Said face being adapted to receive a Sheet of wrapping material larger than the area of the pie, over the pocket, said pocket being so formed as to receive a pie laid face down on said Sheet and| to fold said Sheet around the pie circumference; means on said member movable over 'said pocket to fold the edge of the Sheet over the bottom of the pie; and means to repeatedly move said folding means into and out of operative position to fold Said sheet, and to momentarily press an adhesive pie plate over the bottom of the p1e.

5. A pie wrapping machine comprising a frame; a pie holding member on the frame having a pocket formed on a face thereof, said face being adapted to receive a Sheet of wrapping material larger than vthe area of the pie, over the pocket, said pocket beingdso formed as to receive a pie laid face down on said Sheet and to fold said Sheet around the pie circumference; means on said member movable over said pocket to foldcthe edge of said sheet over the hottom of the pie; and means to move said folding means into and out of operative position, Said; member being ro tatably supported on the frame to allow the inverting of the position of the receSs, whereby the wrapped pie is discharged therefrom.

6. A pie wrapping machine comprising a frame; al pie holding member on the frame having a pocket formed on a face thereof, said face being adapted to receive a Sheet of wrapping material larger than the area of the pie, over the pocket, said pocket being so formed as to receive a pie laid face down on saidj Sheet and to fold Said Sheet around the pie circumference; means on said member movable over'said pocket to fold the edge of the lSheet over the bottom of the pic; and means to repeatedly move said foldingmeans into and out of operative position, said member being rotatably supported Ion the frame to allow the inverting of the position of the recess, whereby the wrapped pie is discharged therefrom.

7. A pie wrapping machine comprisingI a frame; a pie holding member having a pocket thereon to be covered by a Sheet of wrapping material on which a pie is placed to be received in Said pocket in an inverted position; means on Said member to be extended over the said pocket to fold the edges of said Sheet over the bottom of the pie; and means to move said folding means into and out of operative position, Said folding means comprising a plurality of arcuate bars being slidable in said member over the pocket, Said bars being pivoted to said actuating means in pairs and aving the free ends of the bars in one pair slidably connectedto the respective ends of the other pair of bars,`to be guided thereby to be pivotally movable over said pocket.l

8. pie wrapping machine comprising a prislng a plurality of arcuate bars being slidable in said member over the pocket, said bars being pivoted to said actuating means in pairs and having the free ends of the bars in one pair slidably connected to the respective ends of the other pair of bars, to be guided thereby to be pivotally movable over said pocket, said bar actuating means comprising a cam mounted in the said member so that the cam and the member are rotatable around a common axis relatively to each other, and two oppositely disposed actuating brackets resiliently and `slidably mounted in usaid member, to pivotally support the pairs of bars, said brackets being operatively related to said cam to move the bars relatively to said pocket.

9. A pie wrapping frame;v a shell pivoted thereon, pockets formed on the Shell being disposed oppositely about the pivotal axis of the shell, said shell being adapted to have a sheet of wrapping `material placed over the upper most pocket and a pie placed on said sheet to be received in the respective pocket in an inverted position; folding means slidable in said shell to be extended over the said pockets to fold the edges of said sheet over the bottom of the pie; and means to move said folding means into and out of operative position over the pockets.

10. A pie wrapping machine comprising a frame; a shell pivoted thereon, pockets formed on the shell being disposed oppositely about the p'ivotal aXis of the shell, said Shell being adapted to have a sheet of wrapping material placed over the uppermost pocket and a pie placed on said sheetito be received in the respective pocket in an inverted position; folding means slidable in said shell to be extended over the said pockets to fold the edges of said sheet over the bottom of the pie, the position of said pockets being invertible by the rotation of said shell, whereby the wrapped pie is discharged therefrom; and means to move said folding means into and out of operative position over the pockets.

11. A pie wrapping machine comprising a frame; a shell pivoted thereon, pockets formed on the shell being disposed oppositely about the pivotal axis of the Shell, said shell being` adapted to have a sheet of wrapping material placed over the uppermost pocket and a pie placed on said sheet to be received in the respective pocket in an inverted position; means slidable in said shell tion,

machine comprising a;

to be extended over the said pockets to fold vthe edges of said shell over the bottom of the pie; and means mounted coaxially with said Shell and being rotatable relatively thereto to operate said folder moving' means by the rotation of said shell and said last mentioned coaxial means relatively to each other.

12. A machine for wrapping pies comprising an element provided with a pie receiving recess, adapted^to receiveI a'sheet of material over the recess, saidvrecess being arranged to turn the edges of the material asV the pie is placed thereon in face down posimeans on said element to move over the bottom of the pie in the recess to fold the said edges of the material over the pie bottom, and also to move over a pie plate placed on said folded edge on the pie bottom so as to press the plate onto said folds and bottom to establish firm contact on adhesive between the plate and the folds.

13. A machine for wrapping pies comprising an element provided with a pie receiving recess, adapted to receive a sheet of material over the recess, said recess being arranged to. turn the edges of the material as the pie isplaced thereon in face down position, means on said element to move over the bottomof the pie in the recess to fold the' said edges of the material over the pie bottom, and 'also tomove over a pie plate placed on said folded edges on the pie bottom so as to press the plate onto said folds and bottom to establish firm contact on adhesive between the plate and the folds, and means for turningl 14. A machine for wrapping pies compris-y ing an element provided with a pie receiving recess, adapted to receive a sheet of material over the recess, said recess being arranged to turn the edges of the material as the pie is placed thereon in face down position, means on said element to move over the bottom of the pie in the recess to fold the said edges of the material over the pie bottom, and also to move over a pie plate placed on said folded edges on the pie bottom so as to press the plate onto said folds and bottom to establish firm contact onA adhesive between the plate and the folds, and. means for turning said element so that the recess is brought in a `downward position to allow the dropping of the wrapped pie therefrom.

15. In a wrapping machine, a body having a recess thereon to receive an article to be wrapped therein being adapted to have a sheet of wrapping material' placed over the recess, the recess being so proportioned that its walls fold -the edges of the wrapping material over) viae recess is brought into an inverted r.Jsition to allow the" dropping of the wrapped article therefrom.

16. In a wrafpping machine a frame, an element onthe rame provided with a recess adapted to have wrappin material placed over the recess to be presse into the recess by an article to be wrapped so that the edges of the wrapping material are turned over the edges of the article, means operatively related to the recess to fold the said turned edges of the wrapping material over the face'of the article, and means to turn the said element into an inverted position so as to allow the drciping of the wrapped article out of the sai recess. I In testimony whereof, I have hereunto set my hand at San Francisco, California, this 27th day of December, 1929. c

HIPPOLYTE DRAGON. 

